<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>ajax-get</title>
    <script src="jquery.js"></script>
</head>
<body>
<form action="index.html" method="post" enctype="application/x-www-form-urlencoded">
    <input type="text" name="username" placeholder="请输入用户名"> <br>
    <input type="password" name="password" placeholder="请输入密码"> <br>
    <button type="submit"> 登录 </button>

</form>
<script>
// AJAX:Asynchronous javascript and xml
//    异步的js与xml
//    在不重载页面的条件下更新页面数据

    $('form').submit(function (ev) {
        ev.preventDefault();
        console.log('已经阻止');
//        获取表单数据，自动将其转化为字符串序列化对
//        name=value&name=value
        var data = $(this).serialize();
        $.get({
            url:'index.html', //请求路径
            data:data,  //请求数据
            success:function (resData) { //请求吃呢公共之后的回调函数
//                内部参数：服务端返回的响应数据
            }
        })
    })
</script>
</body>
</html>